SshConnection: do not try to sudo as root
If a command is executed "as_root", SshConnection always prepended
"sudo" invocation to the command, even if the user name is "root". This
causes problems on patforms that do not have "sudo".
This commit changes this behavior so that sudo is never used for root
users.
diff --git a/devlib/utils/ssh.py b/devlib/utils/ssh.py
index ff30346..af644bf 100644
--- a/devlib/utils/ssh.py
+++ b/devlib/utils/ssh.py
@@ -228,6 +228,9 @@
def _execute_and_wait_for_prompt(self, command, timeout=None, as_root=False, strip_colors=True, log=True):
self.conn.prompt(0.1) # clear an existing prompt if there is one.
+ if self.username == 'root':
+ # As we're already root, there is no need to use sudo.
+ as_root = False
if as_root:
command = "sudo -- sh -c '{}'".format(escape_single_quotes(command))
if log: